MESON Chess Problem Database

Problem Display
PID: 157763 (1b4b1/5p2/R3PP1n/2ppk1rn/3NN3/K3P3/8/1B3R2 w - - 0 1)

Petite, Efren

Israel Problemists' Association, 1954

1b4b1/5p2/R3PP1n/2ppk1rn/3NN3/K3P3/8/1B3R2

#2

9 + 9

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Sf5
      • 2.Sf3#
    • 1...fxe6
      • 2.Sc6#
  • Tries
    • 1.Rf5+?
      • 1...Sxf5
        • 2.Sf3#
      • 1...Rxf5!
  • Keys
    • 1.Sxc5!
      • threat
        • 2.Sd7#
      • 1...Sxf6
        • 2.Sf3#
      • 1...Bd6
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(f);SBLOCK::S(E)
    • P(g);SBLOCK,XP(H)::S(E)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • S(f);SBLOCK,XR(B)::S(E)
      • Refutation
        • R(d);XR(B)
  • Actual
    • S(F);XP(a)
    • Threat
      • S(F)
    • Vars
      • S(e);SBLOCK,XP(I)::S(E)
      • B(h);P_PINS(F),SBLOCK::S(E)
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